for n in range(x,y) ??

[MuntyScruntfundle]

Why does
>> for n in range(1,5)
give 4 iterations?

>> for n in range(0,5)
give 4 iterations?

>> for n in tange(1,6)
give 5 iterations?

Surely this makes little sense. Do I need to set a base number somewhere like you used to have to in Basic many years ago?

Thanks.